Monday, July 15, 2013

Network problems of Linux Mint

I have installed and used Linux Mint (Maya) on my Toshiba Satellite for several months. The network setting has always troubled and annoyed me, especially the wireless one.

I had encountered three problems:
  1. If the cable doesn't connect to the laptop or the network is not working, the system always wait for a long time with the messages read:
    ``Waiting for network configuration...''
    ``Waiting up to 60 more seconds for network configuration...''
  2. When the network is interrupted, it won't recover automatically.So every time I close the laptop lid to sleep the system and open it to resume it, I have to open the terminal and type ``sudo pon dsl-provider'' to get the network connection back.
  3. I couldn't connect to my wireless network at home, and found nowhere to get the settings done. My wireless network has been set as hidden, and I have added it in the Network Connections. But when I tried to connect it, the icon always showed the processing state and the connection was never done.
Today I got all these problems solved and I am happy now.

Here are the solutions I found and tested successfully:
  1. Edit the file: /etc/init/failsafe.conf
    Find the lines with ``sleep'' and comment out the two which related to the system messages just mentioned above.
  2. Reinstall network-manager by
    sudo apt-get --reinstall install network-manager
    and use the following command to start the manager:
    sudo /etc/init.d/network-manager restart
  3. Edit the file: /etc/NetworkManager/NetworkManager.conf
    change ``managed=false'' to ``managed=true''
    restart the network manager by
    sudo /etc/init.d/network-manager restart
    After doing these, the available wireless network will show up. My hidden wireless network still couldn't be connected so I tried to click its icon and a window popped out for me to enter the password. I inputed the password and everything went as expected as shown in the figure:
---
ref:
http://forums.linuxmint.com/viewtopic.php?f=150&t=110218
http://ubuntuforums.org/showthread.php?t=1528695&p=9575190#post9575190
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6 comments:

  1. M Douglas11:55 AM

    Hey there - thanks for this. This helped with the problem of restarting network manager.

    I'm still having one more issue that I can't identify. Maybe you can help?

    I had exactly the situation that you described. I followed these steps and got wireless to connect. But it will only allow traffic for a brief period to some routers and no traffic at all for others (the routers don't show up). Any help at all would be appreciated.

    Michael

    ReplyDelete
    Replies
    1. THK1:54 PM

      Hi, Michael,

      Sorry for abandoning my blog for such a long time and didn't reply you till now.

      I also encountered ``a brief period connection'' problem several months ago, but I didn't have time to find out where the problem was. Also, I've not used the wireless connection for a long time and didn't recall the details of connection problem...

      Sorry I have no further information for you now and hope you've solved your problem.

      Delete
  2. Shani9:37 PM

    Hello.. Thanks a lot for maintaining these notes.

    ReplyDelete
  3. Anonymous5:01 AM

    Thanks blogger peeps

    ReplyDelete
  4. netalex4:53 PM

    that hack seems to do not work anymore in mint 14. new version of network manager does'nt have start|stop| restart script.

    ReplyDelete
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    wireless network

    ReplyDelete

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